Macrosiphum tuberculaceps
(Essig, 1942)
sweet-after-death aphid
Macrosiphum tuberculaceps is an to the Pacific Northwest region of North America. It is commonly known as the sweet-after-death aphid due to its exclusive association with its plant, sweet-after-death (Achlys triphylla). The species exhibits distinctive morphological features including longer than its teardrop-shaped body, short siphunculi inflated at the base with blackish tips, and legs longer than the body length. Its highly specialized host relationship makes it a notable example of monophagy among aphids.
Pronunciation
How to pronounce Macrosiphum tuberculaceps: //ˌmækroʊˈsaɪfəm ˌtuːbərkjuːˈleɪsɛps//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other Macrosiphum by the combination of extremely long exceeding body length, short siphunculi with inflated bases and dark apices, and disproportionately long legs. Its exclusive presence on Achlys triphylla provides a strong clue. Similar aphids in the may share general body plan but differ in antennal length, siphuncular proportions, and leg length ratios.
Appearance
Tiny with teardrop-shaped body. longer than body length. Siphunculi short, inflated at base, with blackish tips. Legs generally longer than the aphid itself.
Habitat
Associated with sweet-after-death (Achlys triphylla), a forest understory plant. Does not stray far from its plant. Specific microhabitat conditions beyond host association have not been documented.
Distribution
to the Pacific Northwest region of North America.
Diet
Exclusively feeds on sweet-after-death (Achlys triphylla). Monophagous.
Host Associations
- Achlys triphylla - obligateExclusive plant; does not stray far from it
Behavior
Remains closely associated with its plant Achlys triphylla. Does not disperse far from host.
Ecological Role
Herbivore specialized on Achlys triphylla. Specific roles in dynamics, such as -prey relationships or nutrient cycling impacts, have not been documented.
Similar Taxa
- Other Macrosiphum speciesShare general body plan and -level characteristics, but differ in antennal length, siphuncular , leg proportions, and plant associations
More Details
Nomenclatural Note
Catalogue of Life lists this as a synonym, while GBIF and NCBI treat it as accepted. This discrepancy reflects ongoing taxonomic evaluation.